Drawer-operating mechanism.



F. A. COLEMAN.

DRAWER OPERATING MECHANISM.

APPLICATION HLED uc.31,1915.

1 ,2'74, 14 1. Patented July 30 191 3 SHEETS-SHEET l.

F. A. COLEMAN.

DRAWER OPERATING MECHANISM.

APPLICATION FILED DEC.3I, 1915.

Patented Jul 1918.

3 SHEETS- 2.

ll m

FY i" F. A. COLEMAN.

DRAWER OPERATING MECHANISM.

APPLiCATlON FILED 050.511.1915.

Patented July 30, 1918.

3 SHEETSSHEET 3 iv l flus /Z71" 15 inwardly and outwardly.

UNITED STATES PATENT ornroa.

FREDERICK A. COLEMAN, OF CLEVELAND HEIGHTS, OHIO, ASSIGNOE IO THE FOUNDRY EQUIPMENT COMPANY, OI CLEVELAND, OHIO, A CORPORATION 01 OHIO.

DRAWER-OPERATING MECHANISM.

Application filed December 81, 1915. Serial No.69,-'704.

To all whom it may concern:

Be it known that I, FREDERICK A. COLE- MAN, a citizen of the United States, residing at Cleveland Heights villa e, in the county of Cuyahoga and State of bio, have invented a certain new and useful Improvement in Drawer-Operating Mechanism, of which the followin is a full, clear, and exact description, re erence being had to the accompanying drawings.

An object of this invention is to provide a simple efficient mechanism by which the weight of a drawer may be carried on rolling supports for purposes of moving the same Another object of the invention is to so arrange the rolling supports and the mechanism engaging the drawer that the drawer ma be supported at widely separated points, t ereby securely maintaining the drawer in its substantially horizontal position. Another object of the invention is to provide means whereby such a mechanism may be adapted to operate any one or more of a series of superimposed drawers. A more specificobject is to provide a simple and conveniently operable means by which a selected drawer of a series may be attached to and operated by my mechanism.

My invention is hereinafter more fully described in connection with the accompany- I ing drawings and the essential characteristics are set forth in the claims. In the drawings Figure. 1 is a front ele vation of a core oven showin the series of drawers and my operating evice 1n position in front of the same; Fig. 2 is a transverse vertical section through the series of drawers showin the operating device in side elevation and s owing one of the drawers withdrawn to its outer position Fig. 3 is a side elevation of the operating mechanism showing the same in position in front of the drawers before engaging them, the drawers being shown in section; Fig. 4 is a horizontal section through one of the drawers showing'the adjacent parts of the operatingmechamsm in section; Fig. 5 is a detail of one of the devices for engaging a drawer,

illustrating the selective feature.

While the drawings illustrate my invention as used withthe drawers of a core oven, it is to be understood that it may be used with any drawer 0r series of superimposed 5 drawers requiring such a mechanism.

Specification of Letters Patent.

Referring to the drawin by reference numerals, 1 and 2 indicate t e side walls of a core oven, 3 the rear wall thereof, 4 a suit- I able top and 5 a front plate provided with a vertically arranged series of openings through which the drawers may operate.

As shown the drawers comprise a bed plate .10 preferably a casting forming a grille is in its outer position, as illustratedin Fig.

plate 15 aces 17 2. Extending rearwardly from the are brackets 16 having bearing sur on their under sides adapted to engage and roll on horizontal shafts 20 rigid with flanged wheels 22, which in turn engage and roll on rails 24 extending from the front plate 5 to the'rear wall 3. These rails are preferably in the form of angle irons carried at their inner ends on angle irons 25 and at their outer or forward ends on inwardl projecting flanges 26, shown as'integral with the front plate 5. The length of the bearing surface 17 is such that the shaft may travel from a downwardl curved portion at its inner end to a shoul er at its forward end without sliding on the same, such travel being due to the turning of the flanged wheels 22 as they travel along the rails 24 the distance required to move the drawers from the outer to the inner position.

While being moved and while in their operatmg mechanism for engaging the front of the drawer and by which it may be moved will now be described.

A suitable trackway is provided above the series of drawers, which is shown as comprising a pair of channel irons 30 resting on top of the top wall 4 and securely anchored at their rear endsby'a cross member 32 and anchorin bolts 34 secured thereto and extending ownwardly and anchored within the rear wall 3. In the core oven shown in the drawings this rear wall is preferably made up of suitable masonry to which the bolts. 34 may be anchored as shown. The track members or rails 30 project forwardly over the drawers, as shown in Fig.

2, and are adapted to'carry a suitable trolley .35 shown as comprising a suitable frame 36 mounted on two pair of flanged wheels 37 and 38, the flanges of which engag'e the inner sides of the channels, as shown in Fig. 1. The forward ends of the channels may be braced by each otheror by a suitable cross member 40 shown as an angle iron tion, while in its normal position the block extending across the tops of the same and secured thereto. This member 40 serves as 24') a stop to prevent the trolley running off of the ends ofits rails by engaging the wheels 38 when the trolley reachesthe end ofits forward movement.

,The means by which the front ends of the drawers are raised and supported by trolley 35 will now be described.

Depending from the frame 36 are two vertical members shown as angle irons 44, each braced by a plate shown at 46. The angle irons 44 are each so positioned that one flange turns toward the drawer, and to these flanges are pivoted a series of hooks 47 T shown as having bifurcated portions extending over the sides of the flanges and engaging pivot. pins 48. The free ends of these portions 49 forming the hook proper which is adapted to engage the downwardly opening recess formed by the handle members 14.

The means for raising these hooks for engaging the handles of the drawers comprise two pair of parallel vertical rods depending from the short arm of the levers 50 pivoted ona'shaft 51 carried by the frame 36 of the trolley, and each pair of these rods designated52 extends downwardly-each side of a vertical row of the, hooks '47. Below each of these hooks is provided a pivoted distance block 53 carried on a rock shaft 54 extending through the rods 52 and having a handle 56 at each end by which the distance blocks. on the shaft may' be. swung upwardly. This movement brings the rounded free end of each block into engagement with a notch 57 in the lower side of the associated hook member 47. When the distance. pieceis in this position the hook member is supported in its horizontal posi-,

is swung downwardly, as shown in Figs. 2 and 3, until the shoulder between the bifurcatedportion engages the edge of the flange of the angle iron to which the hook is pivoted, permitting thehook to stand below its engaging position. N ow when two of these hooks have been swung upwardly to their horizontal position by the distance blocks 53, the hooks standing beneath the handles 14 of the drawer, the rods 52 are'raised' by swinging the levers 50 which carry downwardly extending links 60 connected to short rock arms 62 rigid on a rock shaft 63. This shaft is carried in suitable brackets sup-;

ported on the angle iron member 44 andis adapted to be operated by a hand lever 64 shown as provided with a suitable handle- 65. A more'complete oration is as follows:

The hand levers 56 opposite the drawer deslred to be operatedare moved from their description of the opdepending position, shown in Fig. 3, to the position shown in Fig. 5, raising the distance blocks and bringing the hook members 47 into position to engage 'th6 projecting handles 14 on the drawer to be withdrawn. The lever 64 is then swung downwardly from the position shown in Fig. 3.to the pos tlon shOWn in Fig. 2, acting through the links 60, thelevers the hooks and thereby raising the front end of the drawer: free from the opening in the 50 and rods 52 to raise front plate 5, through which the drawer operates; The drawer is then supported on four pomts, by the two separated hooks 47 and the two brackets 16 on the roller device comprising the shaft 20 and the wheels 22.

fected by a greater weight on one edge than on the other;

As the handle 64 is swung downwardly hus the drawer is very stableand not af- V the rock arms 62 bring the lower ends of the links 60 inwardly to such a point that the direction of pull is within the axis (toward the drawers) of the rock shaft 63, as will be seen from Fig. 2. Thus the downward pull on the rods 52' acting through the lever' 50 and link .60 tends to bring the rock arms 62 against the angle bars 44.and hold posltion shown in Fig. 2, obvlating the necessity of manually the lever -64 in the holding Following the lever 64 it is the lever in this position. downward movement of the only necessary to draw forwardly on this lever to move the trolley 35 forwardly, and by reason of the engagement of the hooks 47 with the drawer handles thedrawer follows and is withdrawn to the position shown in Fig. 2, where the upright plate 15 at the inner end closes the opening through which the drawer operates, preventing the escape of hot gases. A reverseof this series of movements may serve to return the drawer to its innermost position, andthe raising of the lever 64 may lower the front end of the drawer until it rests upon the adjacent portion of the front plate 5.

It is obvious that the others of the series of superimposed drawers may be withdrawn in a similar manner, it belng only necessary to select the proper drawer by operating the nace it is to be understood that I- do not wish to limit my invention to this particular embodiment, for it is equally well adapted for many other purposes where the drawers are of such weight or size as to make desirable a mechanical operating means for withdrawing and moving the same into. position.

Having thus described my invention, what I claim is:

1. The combination of a lurality of superimposed drawers, a trol ey, mechanism carried thereby for engaging the drawers adjacent'to their front ends, said mechanism having laterally spaced engaging devices adapted to support the drawer at two points, and a device common to\both supporting members for operating them together.

2. The combination of a plurality of superimposed drawers, a trolley trackway extending longitudinally of the drawers, a trolley on the trackway, a pair of upright supporting bars carried by the trolley, means for engaging the various drawers carried by said supporting bars whereby said devices are in pairs for the various drawers, and a series of cross rods carried by said supporting bars, each cross rod being provided with means for operating both drawer engaging members appertaining thereto.

3. In a device of the character described, the combination, with a case, of a set of superimposed drawers therein, a set of movable hooks arranged in two tiers side by side, one pair of books for each drawer, a set of locking devices adapted to position any pair of hooks as a unit to engage the corresponding drawer, and a trolley carrying said sets of books and locking devices and adapted to carry them away from said case with the engaged drawer supported at two points at the front.

4. In a device of the character described, the combination with a series of superimposed drawers, a trackway extending forwardly from the drawers, a car movable on the trackway, an upright carried by thecar in front of the drawers, selective devices carried by the upright and adapted toengage the series of drawers respectively, each selective device comprising a hook. and means adapted to hold it in engaging posiarm d yrth ea -w in front ofthe drawers,aseries-ofgselective" I s; Caraway-at ip ght-ianda apt d to ek e neaei v raw: respeet re y, e ec iv devi e qmilr sinsjlahooki pivoted upright, e d in d I A r p .,i t.e.neea lee sgz a to :be wu h sedan-su h ec -int h ra ter e ribed, 1:5;-

hooks to engagelthe drawers, and'zmechanism for conc', rrently movingthe variousidistanc'e blocksif'f 7 'Ihe combination sw-it a -'plu-ralityof superimposed; drawers,%1zofz= a -.-w.ithdrawing de e haY ngna-s ppwt; pivoted thereto, a Series;'ofz devicesaadapted to hold the hooks respectivelyiin engagem'ent with correspondi'ng-uadrawers, 'a nviupright member. adapted "to act simultaneously on ggseries ofii hooks the. various deviceszcmentionedgeandwme'zms for moving the upright ineinber vertically". I 8. In .adevice of :the'xchara'cter described, the combination ,of- 5a! aplurality' of su'perim posed drawers, an upright member, a series of hooks pivoted to the upright member. and adapted to engage the respective drawers, a second upright member, a .series of distance blocks pivoted to the last mentioned upright member and adapted to be turned to hold the hooks respectively in position to engage the drawers, and means for raising said second upright member.

9. In a deviceof the character described, the combination of a plurality of superimposed drawers. a supporting member adjacent to the front thereof, a set of hooks piv oted to such member and adapted to engage the drawers respectively, a movable upright bar, a series of distance blocks pivoted to such bar and each adapted to hold the corresponding hooks in a drawer-engaging position, an operating device, and connecting mechanism between the same and said bar for simultaneously operating the hook-locking devices.

10. In a device of the character described, the combination of a pluralit of superim posed drawers, an upright a jacent to the front thereof, a set of hooks pivoted to the upright adapted to engage the drawers, a

7 second upright member, a set of distance blocks carried by said second upright mmher, and adapted to holdthe respective hooks in a drawer-engaging position, a device movable in a direction parallel with the movement of the drawers and carrying the. two upright members mentioned, and .means for operating the upright member which carries the hook-locking devices;

. 11. In a device of the character described, the combination with a plurality of superimposed drawers, of a trackway running parallel with the d1recti0n of movement of said drawers, a car movable on said trackway, a supportingmember earned by said car, a series of hooks carried by said member and adapted to coact with the respective.

drawers, a movable upright carried by the car, a set of lockin devices carried by said upright adapted to old the hooks in drawerengaglng position, an operating lever carried by the supporting member, and connecting mechanism between the same and the said upright to enable any drawer to be engaged and withdrawn.

12. In a device ofthe character described, the combination of a plurality of superimposed drawers, a trackway running parallel with the direction of movement of the draw-- mounted on the car and adapted to raise said pair of bars.

13. In a device of the character descri" l,

the combination of a pluralityof super .n-

blocks to bring them to active or idle posi-' tion, a lever pivotally mounted on the can and to which said bar is connected, and o crating mechanism carried by said uprig t member and connected to the lever at another point.

14. In a device of the character described, the combination with a plurality of superimposed drawers, of a trackway running parallel with the direction of movement of said drawers, a car movable on said trackway, upright members carried by the car, hooks pivoted on said members for enga ing each of the drawers, and longitudin'alfy movable upright members carrying means for raising said hooks, the latter means comprising a pivoted distance block for each hook and a manually operable means for raising each block to bring the hook 'into engaging position, whereby such drawer may be supported by the car and movedtherewith.

In testimony whereof, I hereunto afiix my signature.

FREDERICK A. COLEMAN.

t bar, 

